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2. Pulmonary artery flow-directed catheter use in the obstetric patient;Berkowitz;Obstet. Gynecol.,1980
3. Aorto-caval compression by the uterus in late human pregnancy. II. An arteriographic study;Bieniarz;Am. J. Obstet. Gynecol.,1968
4. Maternal respiratory changes during pregnancy and parturition;Bonica,1973
5. Chandra, P.: Unpublished data.